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如何計算火花中的2列?計數2個元素星火
我測試一下。但是,這不是好辦法..
joinDF = logDF.join(logDF2,"day_number")
compareNumberRequestTraffic = joinDF.groupBy("day_number") \
.agg(functions.count("request","request2")) \
.show()
我有錯誤:
() takes exactly 1 argument (2 given)
我想噸對產出
day_number count(request) count(request2)
2015-01-03 5 7
非常感謝
對不起,我編輯問題@GrantWinney – JackR